Page 1064 - Workshop Manual - Tunland (2017)

04-378 DIAGNOSTICS - ENGINE CONTROL SYSTEM

04 FIXED REGENERATION - CANNOT START

Fault phenomenon Diagnosis logic Possible reasons
• Brake switch fault
• Brake switch
• Clutch switch fault
• Clutch switch
• PTO or remote PTO switch
• PTO or remote PTO switch
fault
• Accelerator pedal position
• Accelerator pedal position
Fixed regeneration - cannot sensor sensor fault
start • Park brake switch • Park brake switch fault
• Vehicle speed sensor
• Vehicle speed sensor fault
• Gearshift mechanism
• Gearshift mechanism fault
• Postprocessing DPF
• Postprocessing DPF fault
• ECM
• ECM fault

Diagnosis Procedure

1 . Check the engine data
(a) Ignition switch: OFF.
(b) Connect the diagnosis tool with the fault diagnosis connector (16 pins) on the lower
left of the dashboard.
(c) Ignition switch: ON, and start the diagnostic tool.
(d) Read the motor data shown on the diagnostic tool.

Check whether the data flow is normal or not.
YES>To step 2.

No >Maintenance related faults.

2 . Check clutch switch
(a) Check whether clutch switch is damaged.
(b) Check whether clutch switch circuit is normal.

Is the inspection result normal?
YES>To step 3.
No >Maintenance related faults.

3 . Check brake switch
(a) Check whether brake switch is damaged.
(b) Check whether brake switch circuit is normal.

Is the inspection result normal?
YES>To step 4.
No >Maintenance related faults.

4 . Check park brake switch
(a) Check whether park brake switch is damaged.
(b) Check whether park brake switch circuit is normal.